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WorksheetsQuiz 4/24
Total questions: 33
Worksheet time: 47mins
Which type of chemical reaction is illustrated by the formula: A + B → AB?
Synthesis reaction
Single displacement reaction
Combustion reaction
Decomposition reaction
Count the number of hydrogen atoms present on the reactant side in the chemical equation: 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O?
10
8
14
12
What is the total number of atoms present in the products of the chemical reaction: 2H₂ + O₂ → 2H₂O?
4
8
10
6
For the chemical equation Fe + O₂ → Fe₂O₃, what is the correct coefficient to balance Fe₂O₃?
2
1
3
4
According to the chemical reaction: 2Na + Cl₂ → 2NaCl, determine the number of moles of Na required to completely react with one mole of Cl₂.
1
4
3
2
What type of chemical reaction is represented by the equation 2H₂ + O₂ → 2H₂O?
Synthesis reaction
Single displacement reaction
Combustion reaction
Decomposition reaction
The chemical equation AB + CD → AD + CB represents which type of reaction?
Combustion reaction
Double displacement reaction
Decomposition reaction
Single displacement reaction
What is the process called when an acid and a base react to form water and a salt?
Combustion reaction
Oxidation reaction
Photosynthesis reaction
Acid-Base Neutralization reaction
Identify the type of reaction for the following chemical equation: CH₄ + 2O₂ → CO₂ + 2H₂O.
Synthesis reaction
Decomposition reaction
Combustion reaction
Single displacement reaction
What does the pH scale measure?
acidity or basicity
density
weight
temperature
What is a distinctive feature of acids?
They have a tonic water flavor
They release hydrogen ions (H+)
They emit oxygen ions (O-)
They feel slippery
Identify the strong acid from the list below:
Baking soda (sodium bicarbonate)
Hydrochloric acid (HCl)
Lemon juice (citric acid)
Vinegar (acetic acid)
If a solution has a pH level of 10, it is classified as:
Alkaline or basic
Acidic
Neutral
Toxic
What is the pH level of a solution that is neither acidic nor basic?
7
3
10
5
Which ion is found in every acidic solution?
Oxygen ion (O2-)
Hydrogen ion (H+)
Sodium ion (Na+)
Chloride ion (Cl-)
An acid is defined as a substance that contributes (a) to a solution.
A base is a substance that accepts (a) from a solution.
What is the range of the pH scale?
1 to 15
5 to 20
0 to 14
10 to 25
What characteristic is common to both acids and bases?
Emits light
Conducts electricity
Solid at room temperature
Neutralizes stomach acid
As the pH level of a solution rises, what is the effect on the concentration of hydrogen ions (H⁺)?
Disappears
Increases
Remains constant
Decreases
What substances are formed when an acid reacts with a base?
Water and a salt
Carbon dioxide and water
Hydrogen and oxygen
None of the above
Which type of chemical reaction is illustrated by the formula: AB → A + B?
Decomposition reaction
Synthesis reaction
Combustion reaction
Double displacement reaction
What category do litmus blue, methyl red, phenolphthalein, and thymol blue all belong to?
Marvel characters
Bases
Acids
pH indicators
What type of compound is the citric acid found in fruits?
Neutral
Both
Bases
Acids
If you can be real and be easy, what shouldn't you be?
real slimy
a gremlin
real easy
himothy/him2
If you put Iced Tea mix in water, the Iced Tea mix is the______.
Solute
Solvent
Solution
What class of reaction best describes the equation below?
CH4 + O2 ⟶ CO2 + H2O
single replacement
double replacement
decomposition
combustion
KBr
Soluble
Insoluble
